Bringing back to life an old thread.
After first 100rds my faux suppressor came loose, surprise surprise. I already had the HBI tool on hand so I really cranked the nut down as tight as I felt comfortable. Next outing, put about 250rds downrange and guess what, faux suppressor came loose again. Today I finally removed the handguard so I could see what was going on. Removed the whole faux suppressor assembly , cleaned the threads with SS brushes and Acetone to remove the unrecognizable thread locking compound that was previously used.
While I had it apart I also placed a .008 shim under the "anti-rotate" flange" of the rear faux suppressor plate on top of the HBI Handguard mount, the faux suppressor absolutely cannot rotate around now, which MIGHT BE contributing to the loosening nut issue.
While examining the barrel threads, found that there is a relief cut between the rear of the threads and the barrel shoulder. Has anyone tried placing a lock washer or wave washer on the shoulder to help lock the faux suppressor nut in place, in addition to Loc-Tite?
At this point I've just applied #271 Red Loc-Tite and reassembled. Am hoping this works because I like the look and really don't want to go the Linear Comp route unless I have to.